You have to make life uncomfortable for the opposing guards. That is the Celtics bread and butter. They are at their best when they are active in the passing lanes and taking the ball away.
Then you have young guys that can beat people up the floor in transition.

We still have to beat the Ravens and Broncos, which I believe is a very tall order, given our defense. It's one thing to beat up on a stinky team like the 49ers. It is another to go into Denver and win there. The Ravens are equally difficult.